Polyurethane bushings for the 3.6L CTS? Do V bushings fit the non-V CTS?

I am in the hunt for polyurethane suspension bushings and cannot find anything built for my car, a 2005 CTS. I honestly hate trying to find parts for this thing because everyone assumes I am talking about the damn V-car. Are the suspension components interchangeable? It will be a while before I get around to upgrading my suspension. I am looking at the Eibach lowering springs and sway-bars, havent decided on shocks yet (some sort of non-load-leveling shock compatible with lowering kits), and I would like to put in polyurethane bushings all the way around at the same time. The engine and driveline come first. Then I will do brakes and suspension. Any help on this matter would be greatly appreciated.